import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import User from './components/users/User.vue'
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'

import Params from './components/goods/Params.vue'
import Cate from './components/goods/Cate.vue'
import List from './components/goods/List.vue'
import Add from './components/goods/Add.vue'

import Order from './components/orders/Order.vue'
import Report from './components/report/Report.vue'
import Test from './components/Test.vue'
Vue.use(Router)

const router = new Router({ // new VueRouter
  routes: [{
      path: "/",
      redirect: "/login"
    },
    {
      path: "/login",
      component: Login
    },
    {
      path: '/home',
      component: Home,
      redirect:'/welcome',
      children: [
        { path: '/welcome', component: Welcome },
        { path: '/users', component: User },
        { path: '/rights', component: Rights },
        { path: '/roles', component: Roles },
        { path: '/categories', component: Cate },
        { path: '/params', component: Params },
        { path: '/goods', component: List },
        { path: '/add', component: Add },
        { path: '/orders', component: Order },
        { path: '/reports', component: Report },
        { path: '/test', component: Test }
      ]
    }
  ]
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  //     next()  放行    next('/login')  强制跳转

  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})

export default router